Brass adapters are a type of hydraulic fitting made from brass. A protective finish may be applied to the adapters to enhance corrosion resistance and durability.

NJ provides brass adapters in various thread types, including BSP, NPT, JIC, SAE and Metric, from 1/8 inch to 2 inches. The pressure rating typically ranges from 3,000 to 5,000 psi, depending on the size and configuration. The temperature rating can be as high as 250-350 degrees Fahrenheit, depending on the material and application. They are also available in various shapes, including straight, elbow, tee, cross.